Double flap check-valve.



H. W. REYNOLDS.

DOUBLE FLAP CHECK VALVE.

APPLICATION I'ILBD MAY 28, 1913.

Patented Feb. 24, 1914.

FIHJ- PIECE- Z/ IIIIIIIIIIIIII IIIIIIML FIG 7 F I MM awuewtoa H. 74.Reynolds Med a- N W attowmg HOWARD W. REYNOLDS, OF CHICAGO, ILLINOISQDOUBLE FLAP CHECK-VALVE.

Specification of Letters Patent.

Patented Feb. 24, 1914.

Application filed May 28, 1913. Serial No. 770,436.

To all whom it may concern Be it known that I, HOWARD IV. REYNOLDS, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Double Flap Check- Valves; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in flap checkvalves for use in line pipes, water meters, etc, and comprises a simpleand efficient device of this nature having various details ofconstruction and combinations and arrangements of parts which will behereinafter fully described, shown in the accompanying drawings and thenspecifically defined in the appended claim.

I illustrate my invention in the accompanying drawings, in which Figure1 is a central longitudinal sectional view through a valve made inaccordance with my invention and held within the oints of a union of amain. Fig. 2 is a sectional view through the check valve showing thevalves open. Fig. 3 is an end view. Fig. & is a sectional View showingthe valve mounted in a casing having threaded end for attachment to awater meter. Fig. 5 is a detail, partially in section. Fig. 6 is a sideelevation of a part of a shell, and Fig. 7 is adetail in elevation of apart of the invention.

Reference now being had to the details of the drawings by letter, Adesignates the valve casing which, in the form shown in Fig. 1, isprovided with a flange A at one end and adapted to be clamped betweenthe flanges B of the coupling members G and D. Said shell has a V-shapedrecess E formed in one end, forming inclined seats for the two flapvalves F and G, which are preferably concaved. Said valve G has itsinner end bent into a cylindrical roll H adapted to receive the pivotalpin K and the other valv has its inner end bent to form a concaved hookI engaging about the roll in the man ner shown in the sectional view ofthe drawings.

Washers L are countersunken in recesses in the wall of the valve shellwith their outer faces flush with the outer surface thereof and againstwhich washers the upset ends or heads N of the pin contact, thussecurely holding the valves in place. Each valve seat has a cut away orrecessed portion 0 along its marginal edge to allow the valve to moveabout said washers. A spring R has one end engaging the valve F and theother the wing G and tends to normally hold the same seated against theinclined marginal edges of the V-shaped portion of the shell. When thevalves are in wide open positions, their outer faces are in contact witheach other, the concaved portions of the valves allowing space toreceive the spring, while valves made in this particular way will bereinforced and made more rigid by being shaped as shown in the drawings.

Projecting from the hinge is a conical shape rib X which serves as asupport for the valve seat and extends the entire width of the shell,thereby reinforcing the same.

In Fig. 4: of the drawings, I have shown a slight modification in theshape of the valve casing in which one end T is threaded and adapted toengage a water meter when the valve is used in connection therewith,otherwise the construction of the valve is identical with that beforeshown and described.

By the provision of a double flap valve made in accordance with myinvention, it will be noted that a practically water tight joint isafforded by the central hinged portion and so arranged that the greaterthe back pressure upon the valve the tighter they will be held in theirseats, while the valves will be allowed to unseat against the tension ofthe spring by a pressure from the opposite direction.

What I claim to be new is A double flap check valve for water mains,meters, etc., comprising a valve casing having a V-shaped opening in oneend thereof, a tapering rib portion extending diametrically across theshell in the interior thereof, a pin mounted within said shell andbearing against said rib, flap valves, one being turned into acylindrical roll and adapted to receive said pin and the other bent toform a rounded hook portion designed to engage said roll, a springbearing against the outer faces of the valves and adapted to hold thesame seated against the inclined edges of the casing, as set forth.

In testimony whereof I hereunto afiix my signature 1n presence of tWoWitnesses.

HOWARD vV. REYNOLDS.

Vitnesses:

WM. SHERMAN CARSON, EDITH C. SCOTT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patente,

Washington, 1). G.

